a character string which indicates the required type of
parameter type; possible values are "CP" (default), "DP",
"pseudo-CP" and their equivalent lower-case expressions.

...

not used, included for compatibility with the generic method.

Value

Note

The possible options of param.type are described in the
documentation of dp2cp; their corresponding outcomes
differ by an additive constant only. With the "CP" option (that is,
the ‘centred parametrization’), the residuals are centred around 0,
at least approximately; this is a reason for setting "CP" as the
default option. For more information, see the ‘Note’ in the
documentation of summary.selm.

Author(s)

Adelchi Azzalini

References

Azzalini, A. with the collaboration of Capitanio, A. (2014).
The Skew-Normal and Related Families.
Cambridge University Press, IMS Monographs series.